發送短信 : A comparison study on effectiveness and robustness of control charts for monitoring process mean and variance

  _____     ______   __   __    ______            
 |__  //   /_   _//  \ \\/ //  /_   _//   ____    
   / //     -| ||-    \   //    -| ||-   |    \\  
  / //__    _| ||_    / . \\    _| ||_   | [] ||  
 /_____||  /_____//  /_//\_\\  /_____//  |  __//  
 `-----`   `-----`   `-`  --`  `-----`   |_|`-`   
                                         `-`